Overhead and underground telephone lead-in cable for voice, data and video transmission services

摘要

An improved overhead or underground telephone lead-in cable for transmission services VVDL (voice, video, data and lead-in) that permits the connection of the users to the public telephone system with a high speed digital service link, besides the analog services required. The cable has at least one or a plurality of transmission circuits. One of the transmission circuit is formed by two metal conductor elements cooperating in turn to self-support the cable or a conventional type of impregnated fibers or kevlar tape. The second circuit which is formed by a stranded pair of conductors is impregnated with a swelling powder preventing moisture penetration.